provider-model | 易学教程

Flutter Provider access via addPostFrameCallback says widget is outside the widget tree but flutter inspector shows otherwise

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问题 I am building my first big app in Flutter, and the first one where I need State Management, so I turned to Provider which is the recommended package to use for State Management. However I am having some issues where I declare my Providers in the main.dart file and down the tree I want to make changes and interact with one of the Providers but no matter what solution I try, I keep getting the same error: "Tried to listen to a value exposed with provider, from outside of the widget tree.". I

Flutter Provider access via addPostFrameCallback says widget is outside the widget tree but flutter inspector shows otherwise

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Converting Single DB ASP.NET Site into MultiTenant - Membership and Roles Dilemma

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问题 I'm in the process up changing a single SQL DB website (ASP.NET/VB.NET) into a multitenant app, where each client has their own database. In the old site, all the ASP roles, logins and providers pointed to the single database. Now we have multiple databases, I'm wondering what would the best architecture/techniques to use. There is one database that configures the tenants, such as the company name, various settings (that would normally be in a web.config) and the connection string to their

Is the Repository Pattern the same as the Asp.net Provider Model?

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问题 Since Asp.net 2.0, there is the Provider Model. On the implementation detail, a provider is class derived from ProviderBase which is an abstract class rather than an interface, but anyway the Provider Model is there so that we can have different implementation to swap in the out by just editing the web.config. For example if you create a blog app, you may have a BlogProvider : ProviderBase, then you can have implementations of BlogProvider like: SqlBlogProvider, OracleBlogProvider and even

Converting Single DB ASP.NET Site into MultiTenant - Membership and Roles Dilemma

阅读更多关于 Converting Single DB ASP.NET Site into MultiTenant - Membership and Roles Dilemma

I'm in the process up changing a single SQL DB website (ASP.NET/VB.NET) into a multitenant app, where each client has their own database. In the old site, all the ASP roles, logins and providers pointed to the single database. Now we have multiple databases, I'm wondering what would the best architecture/techniques to use. There is one database that configures the tenants, such as the company name, various settings (that would normally be in a web.config) and the connection string to their tenant database. Should we have all the membership & role stuff in the single database that configures

Is the Repository Pattern the same as the Asp.net Provider Model?

阅读更多关于 Is the Repository Pattern the same as the Asp.net Provider Model?

Since Asp.net 2.0, there is the Provider Model. On the implementation detail, a provider is class derived from ProviderBase which is an abstract class rather than an interface, but anyway the Provider Model is there so that we can have different implementation to swap in the out by just editing the web.config. For example if you create a blog app, you may have a BlogProvider : ProviderBase, then you can have implementations of BlogProvider like: SqlBlogProvider, OracleBlogProvider and even MockBlogProvider for testing. Now, Repository Pattern is getting popular, and I feel it is to satisfy the